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Statistical Analysis Methodology

Journal Article

Journal Article

Optimizing Variance-Bias Trade-Off in the TWANG Package for Estimation of Propensity Scores

This discussion highlights potentially meaningful ways to optimize propensity score machine learning methods to allow for minimal bias and less variability.

Dec 28, 2017
Journal Article

Journal Article

A Synthetic Estimator for the Efficacy of Clinical Trials with All-Or-Nothing Compliance

Synthetic estimation is a promising approach when patient noncompliance is affecting a clinical trial.

Sep 26, 2017
Tool

Tool

Propensity Scores for Repeated Treatments: A Tutorial for the iptw Function in the TWANG Package

This tutorial describes the use of the TWANG package in R to estimate inverse probability of treatment weights (IPTWs) when one has time varying treatments or sequences of treatments over time.

Sep 14, 2017
Report

Report

Quantifying Cost and Schedule Uncertainty for Major Defense Acquisition Programs (MDAPs)

To help the Air Force better anticipate cost and schedule challenges and manage programs, this study developed a methodology to evaluate the likelihood of cost growth and schedule slip for major defense acquisition projects (MDAPs).

Jul 17, 2017
Journal Article

Journal Article

Predictions Put Into Practice: A Quasi-Experimental Evaluation of Chicago's Predictive Policing Pilot

In order to better understand the effects of an individual-focused predictive policing program in the field, this study analyzes a pilot program implemented in Chicago in 2013 aimed at reducing gun violence.

Jul 6, 2017
Journal Article

Journal Article

A Framework for Synthetic Control Methods With High-Dimensional, Micro-Level Data: Evaluating a Neighborhood-Specific Crime Intervention

Our study illustrates the advantages of using high-dimensional, micro-level data in the context of synthetic control methods.

Jun 30, 2017
Tool

Tool

Propensity Scores for Multiple Treatments: A Tutorial on the MNPS Command for Stata Users

This tutorial explains the syntax and features related to the implementation of the MNPS commands in the Stata TWANG series.

May 5, 2017
Journal Article

Journal Article

Introduction to Medical Care Statistical Workshops for Health Services Research: Practical, State-of-the-Art Reviews

This is the introduction to a new series of statistical workshops that are practical and state of the art.

May 4, 2017
Report

Report

Demographic, Social, Economic, and Housing Characteristics: Development of a U.S. Contextual Database of 1990–2010 Measures

This report describes a contextual database of demographic, social, economic, housing, cultural, and urbanization measures for U.S. census tracts, counties, and metropolitan statistical areas for use in research.

Jan 3, 2017
Blog

The Art of Data in Baseball

The traditional baseball scout's keen eye is no longer deemed sufficient to rate talent, said Jeff Luhnow, general manager of the Houston Astros, at RAND's Politics Aside event. Analysts check curveball spin rates, computer-modeled swing mechanics, and even sleep habits.

Nov 15, 2016
Tool

Tool

RAPAPORT: Resilience Assessment Process and Portfolio Option Reporting Tool

The Resilience Assessment Process and Portfolio Option Reporting Tool (RAPAPORT) is a Microsoft Excel-based tool for assessing non-materiel aspects of resilience.

Apr 28, 2016
Report

When Race/Ethnicity Data Are Lacking: Using Advanced Indirect Estimation Methods to Measure Disparities

This report describes the use of indirect estimation methods to estimate racial/ethnic populations in health care records, which often lack such data, and the use of such methods to measure and monitor disparities in quality of care.

Mar 28, 2016
Journal Article

Journal Article

A Practical Introduction to Methods for Analyzing Longitudinal Data in the Presence of Missing Data Using a Marijuana Price Survey

In applied psychology research settings, such as criminal psychology, missing data are to be expected. Missing data can cause problems with both biased estimates and lack of statistical power. The paper aims to discuss these issues.

Mar 18, 2016
Commentary

Taking an Interest: What Makes Someone Respond to a Survey

Researchers have two main reasons for caring about non-response. First, it is important to ensure that survey findings are unbiased and representative, and second, concern about survey non-response is a key reason given by those who ignore or chose not to act on the findings of research.

Jan 5, 2016
Journal Article

Journal Article

Robust Estimation of the Proportion of Treatment Effect Explained by Surrogate Marker Information

In randomized treatment studies where the primary outcome requires long follow-up of patients.

Dec 11, 2015
Journal Article

Journal Article

Beyond the Ecological Fallacy: Potential Problems When Studying Healthcare Organisations

Simple recommendations for statistical best practices will improve the translation of appropriate and robust research findings into healthcare policy and practice.

Oct 20, 2015
Commentary

How to Help Surveys Have More Impact

How can researchers and the users of survey research move from a knee-jerk dismissal of survey findings to being comfortable trusting and acting on the findings? Likely ways forward include emphasizing the methodology, triangulating the evidence, acknowledging the limitations, and developing good communication and trust between parties.

Oct 16, 2015
Tool

Tool

Toolkit for Weighting and Analysis of Nonequivalent Groups: A Tutorial on the TWANG Commands for Stata

This tutorial provides an introduction to TWANG and demonstrates its use through illustrative examples. This tool includes the TWANG commands for Stata, a tutorial on their use, and the sample code and datasets used in the tutorial.

Sep 18, 2015
Multimedia

TWANG Short Course/Educational Videos: Three Videos — Introduction, Propensity Score Weighted Analyses with 2 Groups, and Propensity Score Weighted Analyses with More Than 2 Groups

Videos with step-by-step procedures for implementing propensity score analyses involving two or more treatment groups using the TWANG (Toolkit for Weighting and Analysis of Nonequivalent Groups) data analysis package.

Jul 13, 2015
Journal Article

Journal Article

Web-based Textual Analysis of Free-Text Patient Experience Comments from a Survey in Primary Care

Open-ended questions eliciting free-text comments have been widely adopted in surveys of patient experience.

May 18, 2015

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RAND Topic:
Statistical Analysis Methodology

Topic Synonyms:
Statistical Modeling